Julia startup speed cut in half. Was: (Unofficial) Julia 1.9 for lower latency (startup)

How about a ramdisk? :- ) But seriously, and this is slightly off topic, so I hope you don’t mind. Do you know what is the current state of affairs re BLAS settings for Julia 1.8 and even more up to date versions? I’m recalling I’ve been reading about some significant changes planned (link), however, when I skimmed RC notes I can’t recall any particular words on this topic, thus the question.